GB582708A - Improvements in arrangements for obstacle detection and measurement of distances by electromagnetic waves - Google Patents

Improvements in arrangements for obstacle detection and measurement of distances by electromagnetic waves

Info

Publication number
GB582708A
GB582708A GB4506/42A GB450642A GB582708A GB 582708 A GB582708 A GB 582708A GB 4506/42 A GB4506/42 A GB 4506/42A GB 450642 A GB450642 A GB 450642A GB 582708 A GB582708 A GB 582708A
Authority
GB
United Kingdom
Prior art keywords
frequency
beat
oscillator
wave
amplifier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4506/42A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB4506/42A priority Critical patent/GB582708A/en
Priority to US479122A priority patent/US2423088A/en
Priority to FR933790D priority patent/FR933790A/fr
Publication of GB582708A publication Critical patent/GB582708A/en
Priority to ES176088A priority patent/ES176088A1/es
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
    • G01S13/342—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal using sinusoidal modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
GB4506/42A 1942-04-03 1942-04-03 Improvements in arrangements for obstacle detection and measurement of distances by electromagnetic waves Expired GB582708A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB4506/42A GB582708A (en) 1942-04-03 1942-04-03 Improvements in arrangements for obstacle detection and measurement of distances by electromagnetic waves
US479122A US2423088A (en) 1942-04-03 1943-03-13 Distance measuring system
FR933790D FR933790A (fr) 1942-04-03 1946-09-21 Perfectionnements aux systèmes de détection d'obstacles
ES176088A ES176088A1 (es) 1942-04-03 1946-12-14 Mejoras en o relativas a disposiciones para detección de obstáculos y medición de distancias por ondas electromagnéticas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4506/42A GB582708A (en) 1942-04-03 1942-04-03 Improvements in arrangements for obstacle detection and measurement of distances by electromagnetic waves

Publications (1)

Publication Number Publication Date
GB582708A true GB582708A (en) 1946-11-26

Family

ID=9778486

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4506/42A Expired GB582708A (en) 1942-04-03 1942-04-03 Improvements in arrangements for obstacle detection and measurement of distances by electromagnetic waves

Country Status (4)

Country Link
US (1) US2423088A (es)
ES (1) ES176088A1 (es)
FR (1) FR933790A (es)
GB (1) GB582708A (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109407670A (zh) * 2018-12-07 2019-03-01 江苏美的清洁电器股份有限公司 扫地机器人的距离探测方法及其装置和扫地机器人

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525328A (en) * 1945-06-25 1950-10-10 Rca Corp Radar system
US2557864A (en) * 1945-12-05 1951-06-19 Raytheon Mfg Co Object-locating radio system
BE479416A (es) * 1946-03-15
US2598689A (en) * 1946-04-19 1952-06-03 Sperry Corp Noise reduction system for radar
GB915960A (en) * 1949-11-11 1963-01-16 Marconi Wireless Telegraph Co Improvements in or relating to radar systems
US3045233A (en) * 1949-12-30 1962-07-17 Itt Frequency modulation radio altimeter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2206903A (en) * 1940-07-09 Radiant energy distance measuring
FR958724A (es) * 1938-09-26 1950-03-17

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109407670A (zh) * 2018-12-07 2019-03-01 江苏美的清洁电器股份有限公司 扫地机器人的距离探测方法及其装置和扫地机器人
US11474526B2 (en) 2018-12-07 2022-10-18 Midea Robozone Technology Co., Ltd. Distance detection method and device for cleaning robot, and cleaning robot

Also Published As

Publication number Publication date
US2423088A (en) 1947-07-01
ES176088A1 (es) 1947-01-16
FR933790A (fr) 1948-04-30

Similar Documents

Publication Publication Date Title
US3168735A (en) Double sideband-suppressed carrier doppler distance measuring system
GB650114A (en) Improvements in or relating to distance measuring devices utilising reflected wave energy
US2479568A (en) Doppler radar system
GB658974A (en) Improvements in or relating to radio distance measuring apparatus
GB606110A (en) Improvements in or relating to ultra-high frequency object detecting systems
GB541399A (en) Radio-echo altimeters
US2485583A (en) Radio distance measuring system
GB582708A (en) Improvements in arrangements for obstacle detection and measurement of distances by electromagnetic waves
US3113308A (en) Apparatus for measuring doppler frequency differences
GB586126A (en) Improvements relating to determining distance by means of electromagnetic waves
US3065465A (en) Distance measuring devices
GB1376793A (en) Frequency modulation telemeter for measuring speed
US2520553A (en) Radio reflection distance finder
US2467455A (en) Radio speed and distance indicator
US2634413A (en) Velocity measuring system utilizing radio technique
GB671661A (en) Improvements in or relating to distance-measuring systems employing electromagnetic waves
US2502464A (en) Apparatus for determining the speed of a distant object
GB624725A (en) Improvements in or relating to radar equipment utilizing the doppler effect for detecting relatively moving objects
US3142058A (en) Aural indicating doppler radar
US3552860A (en) Refraction measuring apparatus
GB656094A (en) Improvements in or relating to radar systems
GB649025A (en) Improvements in or relating to radio altimeters, and other radio distance measuring systems
US2786996A (en) Wave measuring system
US2570235A (en) Device for measurement of the distances of obstacles
US3286256A (en) Method and apparatus for zero i.f. frequency and ionospheric pulse reception